The invention relates to a
relay protection device constant value online
monitoring system and a method thereof. The
relay protection device constant value online
monitoring system includes a man-
machine interface module, a constant value comparison module, a
network communication module and a
relay protection device; the man-
machine interface module introduces a protection constant value comparison template and an offline constant value
list of which format modification is forbidden and outputs the protection constant value comparison template and the offline constant value
list to the constant value comparison module, so that the offline constant value
list of which format modification is forbidden can be parsed; the
network communication module calls a protection online constant value of the relay protection device and outputs the protection online constant value to the constant value comparison module; the constant value comparison module judges the consistency of a setting parameter in the parsed offline constant value list and the protection online constant value parameter through comparison according to the protection constant value comparison template, and outputs comparison results to the man-
machine interface module; and the comparison results can be displayed in a visualized manner. According to the relay protection device constant value online
monitoring system and the method thereof of the invention, the consistency of a offline constant value and an offline constant value of the relay protection device can be judged based on comparison through the constant value comparison module, and therefore, wrong setting caused by man-made factors can be avoided, and the efficiency of field manual check of the constant values of the relay protection device can be improved, and
technical support can be provided for safe and reliable operation of a power
system.